High Efficiency GaN HEMT Power Amplifier optimized for OFDM EER Transmitter

  title={High Efficiency GaN HEMT Power Amplifier optimized for OFDM EER Transmitter},
  author={S. Hong and Y. Woo and Ildu Kim and J. Kim and J. Moon and H. Kim and J. Lee and B. Kim},
  journal={2007 IEEE/MTT-S International Microwave Symposium},
  • S. Hong, Y. Woo, +5 authors B. Kim
  • Published 2007
  • Materials Science
  • 2007 IEEE/MTT-S International Microwave Symposium
We have proposed a highly efficient power amplifier (PA) for the envelope elimination and restoration (EER) transmitter using gallium nitride (GaN) HEMT. The class AB, B, C and F mode PAs have been implemented with EUDYNA's 10 watts GaN HEMT and compared the bias modulation performances in order to investigate the optimum PA structure. The proposed class F mode PA has been biased at class C and adopted a new output matching topology that improves the overall transmitter efficiency. For the… Expand
16 Citations

Figures and Tables from this paper

Envelope injection consideration of high power hybrid EER transmitter for IEEE 802.16e mobile WiMAX application
  • 7
CMOS Linear High Performance Push Amplifier for WiMAX Power Amplifier
  • N. Masoumi, M. M. Tabrizi
  • Engineering, Computer Science
  • 2011 7th International Conference on Wireless Communications, Networking and Mobile Computing
  • 2011
  • 4
MMIC Doherty power amplifier for a 5W pico-cell base station in GaN HFET technology
  • 2
Optimized Envelope Shaping for Hybrid EER Transmitter of Mobile WiMAX— Optimized ET Operation
  • 28
Optimizing Losses in Distributed Multiharmonic Matching Networks Applied to the Design of an RF GaN Power Amplifier With Higher Than 80% Power-Added Efficiency
  • 55
Characterization and thermal analysis of a 48 V GaN HFET device technology for wireless infrastructure applications
  • 4


Linearity of X-band class-E power amplifiers in EER operation
  • 82
  • PDF
High-Efficiency Envelope-Tracking W-CDMA Base-Station Amplifier Using GaN HFETs
  • 286
  • PDF
A 45% Drain Efficiency, -50dBc ACLR GaN HEMT Class-E Amplifier with DPD for W-CDMA Base Station
  • N. Ui, S. Sano
  • Engineering
  • 2006 IEEE MTT-S International Microwave Symposium Digest
  • 2006
  • 22
Optimum operation of asymmetrical-cells-based linear Doherty power Amplifiers-uneven power drive and power matching
  • 151
A low voltage W-CDMA polar transmitter with digital envelope path gain compensation
  • 53
L-band transmitter using Kahn EER technique
  • 191
Analysis and experiments for high-efficiency class-F and inverse class-F power amplifiers
  • 151
  • PDF
High-Bandwidth, High-Efficiency Envelope Tracking Power Supply for 40W RF Power Amplifier Using Paralleled Bandpass Current Sources
  • 28
  • PDF
Power amplifiers and transmitters for RF and microwave
  • 1,195
  • PDF